They can be used to explore for minerals on the ocean floor or in deep areas of mines too dangerous for humans to enter.
它们可以用于海底探矿或探测对人类太危险的深层区域的矿物。
His case is simple: With no power-sucking life-support systems, ROVs offer more time on the ocean floor-and therefore, more opportunity to explore what we don't know-than manned subs.
他的论点很简单：远程控制潜水器因不需要消耗能量的生命支持系统而能在海底停留更长时间——因此，比载人潜艇有更多机会去探索未知领域。
They can be used to explore for minerals on the ocean floor or in deep areas of mines too dangerous for humans to enter.
它们可以用于海底探矿，或探测对人类太危险的深层区域的矿物。
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